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                        "unstructured": "Pratibha M Karandikar, VaishnavVivek, and Dabhade Ganesh, “Experimental investigation of crack detection of cantilever beam-FFT analyzer”, IOSR Journal of Mechanical and Civil Engineering, 2016, vol.13, pp. 12-17"
                    },
                    {
                        "key": "ref3",
                        "doi": "10.1016/j.ijmecsci.2005.06.008",
                        "unstructured": "H. Nahvi and M. Jabbari, “Crack detection in beams using experimental modal data and finite element modal”, International Journal of Mechanical Sciences, 2005, vol.47, pp. 1477-1497"
                    },
                    {
                        "key": "ref4",
                        "doi": "10.1016/j.proeng.2013.01.094",
                        "unstructured": "D.K. Agarwallaa and D.R. Parhi, “Effect of crack on modal parameters of a cantilever beam subjected to vibration”, Procedia Engineering, 2013, vol.51, pp. 665-659"
                    },
                    {
                        "key": "ref5",
                        "doi": "10.1016/s0022-460x(02)01264-6",
                        "unstructured": "G.M. Owolabi, A.S.J. Swamidas, and R. Seshadri, “Crack detection in beams using changes in frequencies and amplitudes of frequency response functions”, Journal of Sound and Vibration, 2002, vol.265, pp. 1-22"
                    },
                    {
                        "key": "ref6",
                        "unstructured": "Ashish S. Apate and Nitin N. More, “Vibration analysis of cracked cantilever beam’’, International Research Journal of Engineering and Technology, 2016, vol.3, pp. 1177-1181"
                    },
                    {
                        "key": "ref7",
                        "unstructured": "D.P. Kamble, Chandan Kumar, Shivprasad R. Sontakke, and Ratnadip T. Gaikwad, “Analytical and experimental analysis of cantilever beam under forced vibration”, International Journal of Engineering Science and Computing, 2017, vol.6, pp. 2168-2171"
                    },
                    {
                        "key": "ref8",
                        "unstructured": "Vikram S. Yendhe, Prof.V.L. Kadlag, and Prof.R.SShelke, “Vibration analysis of cracked cantilever beam for varying crack size and location’’, International Research Journal of Engineering and Technology, 2016, vol.3, pp. 1913-1919"
                    },
                    {
                        "key": "ref9",
                        "doi": "10.17577/ijertv6is040630",
                        "unstructured": "Soham S. Vader and V. A. Raikar, “Crack detection in composite cantilever beam by vibration analysis and numerical method”, International Research Journal of Engineering and Technology, 2017, vol.4, pp. 1776-1784"
                    },
                    {
                        "key": "ref10",
                        "doi": "10.5937/fmet1801124m",
                        "unstructured": "Mirko S. Maksimovic, IvanaV.Vasovic, Katarina S.Maksimovic, NatasaTrisovic, and StevanM.Maksimovic, “Residual life estimation of cracked aircraft structural components”, FME Transactions, 2018, vol.46, pp. 124-128"
                    },
                    {
                        "key": "ref11",
                        "unstructured": "Nikil j Patil, “Vibrational analysis of portable crane”, International Journal of Engineering Research and Technology, 2014, vol.3, pp. 471-473"
                    },
                    {
                        "key": "ref12",
                        "unstructured": "IlhanAsilturk, HalitAslanci, and UgurOzmen, “Machinery Monitoring Using Vibration Signal Analysis”,International Journal of Mechanical and Production Engineering, 2017, vol.5, pp.21-25"
                    },
                    {
                        "key": "ref13",
                        "doi": "10.21595/jve.2016.17394",
                        "unstructured": "V. Khalkar and S. Ramachandran, “Paradigm for Natural Frequency of an Un-Cracked Cantilever Beam and its Application to Cracked Beam”, ARPN Journal of Engineering and Applied Sciences, 2017, vol.12, pp.1714-1729"
                    },
                    {
                        "key": "ref14",
                        "unstructured": "P. Kumar, S.Bhaduri, and A. Kumar, “Vibration Analysis of Cantilever Beam: An Experimental Study”,International Journal for Research in Applied Science & Engineering Technology (IJRASET),2016, vol.4, pp.361-369"
                    },
                    {
                        "key": "ref15",
                        "unstructured": "Pragnesh K. Chaudhari,DipalPatel,Vipul Patel, “Theoretical and Software Based Comparison of Cantilever beam: Modal Analysis”,International Journal of Innovative Research in Advanced Engineering (IJIRAE),2014, vol.1, pp.75-79"
                    },
                    {
                        "key": "ref16",
                        "unstructured": "Puneet Sharma, AshishGupta, Anuj Kumar Jain, VikasRastogi, “Dynamic Modelling and Validation of Continuous Beam with Free-Free Boundary Conditions”,International Advanced Research Journal in Science, Engineering and Technology, 2017, vol.4, pp.47-53"
                    },
                    {
                        "key": "ref17",
                        "doi": "10.21275/v5i4.nov162663",
                        "unstructured": "Nirmall. T and Dr. Vimala. S, “Free Vibration Analysis of Cantilever Beam of Different Materials”, International Journal of Science and Research (IJSR), 2016, vol.5, pp.612-615"
                    },
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                        "key": "ref18",
                        "doi": "10.17577/ijertv4is041005",
                        "unstructured": "S. P. Chaphalkar, Subhash. N. Khetre, and Arun M. Meshram, “Modal analysis of cantilever beam Structure Using Finite Element analysis and Experimental Analysis”, American Journal of Engineering Research (AJER), 2015, vol.4, pp.178-185"
                    },
                    {
                        "key": "ref19",
                        "unstructured": "Aiko Furukawa and JunjiKiyono, “Identification of structural damage based on vibration responses”,13th World Conference on Earthquake Engineering Canada, 2004, paper 134"
                    },
                    {
                        "key": "ref20",
                        "unstructured": "Vipin Kumar, Kapil Kumar Singh, and ShwetanshuGaurav, “Analysis of Natural Frequencies for Cantilever Beam with I- and T-Section Using Ansys”,International Research Journal of Engineering and Technology (IRJET),2015, vol.2, pp.1013-1020"
                    },
                    {
                        "key": "ref21",
                        "unstructured": "SreekanthSura, AlkaSawale, and M Satyanarayana, “Dynamic Analysis of Cantilever Beam”, International Journal of Mechanical Engineering and Technology (IJMET),2017, vol.8, pp. 1167–1173"
                    },
                    {
                        "key": "ref22",
                        "unstructured": "Chandradeep Kumar, Anjani Kumar Singh, Nitesh Kumar, andAjitKumar,“Model Analysis and Harmonic Analysis of Cantilever Beam by ANSYS”,Global Journal for Research Analysis, 2014, vol.3, pp.51-55"
                    },
                    {
                        "key": "ref23",
                        "doi": "10.1016/j.proeng.2013.01.100",
                        "unstructured": "Irshad A Khan and Dayal R parhi, “finite element analysis of double cracked beam and its experimental validation”, Procedia Engineering, 2013, vol.51, pp.703-708"
                    },
                    {
                        "key": "ref24",
                        "doi": "10.1016/s0141-0296(96)00149-6",
                        "unstructured": "O. S. Salawu, “Detectionof structuraldamage through changes: a review”, Engineering Structures, 1997,vol.19, pp.718-723"
                    },
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                        "key": "ref25",
                        "doi": "10.1016/j.protcy.2014.08.010",
                        "unstructured": "Ranjan K. Beheraa, AnishPandeyb, and Dayal R. Parhic, “Numerical and Experimental Verification of a Method for Prognosis of Inclined Edge Crack in Cantilever Beam Based on Synthesis of Mode Shapes”,Procedia Technology, 2014, vol.14, pp.67–74"
                    },
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                        "key": "ref26",
                        "unstructured": "Ashish R. Sonawane and Poonam S. Talmale, “Modal Analysis of Single Rectangular Cantilever Plate by Mathematically, FEA and Experimental”,International Research Journal of Engineering and Technology (IRJET), 2017, vol.4, pp.264-269"
                    },
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                        "key": "ref27",
                        "unstructured": "Vaishali Dawari and GaurangVesmawala,“Identification of Crack Damage in Reinforced Concrete BeamsUsing Mode Shape Based Methods”,Civil and Environmental Research, 2013, vol.3, pp.24-29. 67 | Page"
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                        "key": "ref28",
                        "unstructured": "PushkarVinayakFegade, Jayesh Ashok Mahajan, and GirishPrakashBhole “Study on Vibration Analysis of an Un-Crack and Cracked Cantilever Beam”, International Journal of Emerging Technologies in Computational and Applied Sciences (IJETCAS), 2014, vol.10, pp.340-343"
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                        "unstructured": "M. Elshamy, W.A. Crosby, M. Elhadary, Crack detection of cantilever beam by natural frequency tracking using experimental and finite element analysis, Alexandria Engineering Journal. (AEJ), 2018, Vol.57, pp.3755-3766"
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                    "value": "This article presents a critical review of recent research done on crack identification and localization in structural beams using numerical and experimental modal analysis. Crack identification and localization in beams are very crucial in various engineering applications such as ship propeller shafts, aircraft wings, gantry cranes, and Turbo machinery blades. It is necessary to identify the damage in time; otherwise, there may be serious consequences like a catastrophic failure of the engineering structures. Experimental modal analysis is used to study the vibration characteristics of structures like natural frequency, damping and mode shapes. The modal parameters like natural frequency and mode shapes of undamaged and damaged beams are different. Based on this reason, structural damage can be detected, especially in beams. From the review of various research papers, it is identified that a lot of the research done on beams with open transverse crack. Crack location is identified by tracking variation in natural frequencies of a healthy and cracked beam",
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                        "doi": "10.1016/j.matpr.2015.07.214",
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                    },
                    {
                        "key": "ref3",
                        "doi": "10.1016/j.ijmecsci.2005.06.008",
                        "unstructured": "H. Nahvi and M. Jabbari, “Crack detection in beams using experimental modal data and finite element modal”, International Journal of Mechanical Sciences, 2005, vol.47, pp. 1477-1497"
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                    {
                        "key": "ref5",
                        "doi": "10.1016/s0022-460x(02)01264-6",
                        "unstructured": "G.M. Owolabi, A.S.J. Swamidas, and R. Seshadri, “Crack detection in beams using changes in frequencies and amplitudes of frequency response functions”, Journal of Sound and Vibration, 2002, vol.265, pp. 1-22"
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                        "key": "ref7",
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                        "unstructured": "Soham S. Vader and V. A. Raikar, “Crack detection in composite cantilever beam by vibration analysis and numerical method”, International Research Journal of Engineering and Technology, 2017, vol.4, pp. 1776-1784"
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                        "key": "ref11",
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                    },
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                        "key": "ref12",
                        "unstructured": "IlhanAsilturk, HalitAslanci, and UgurOzmen, “Machinery Monitoring Using Vibration Signal Analysis”,International Journal of Mechanical and Production Engineering, 2017, vol.5, pp.21-25"
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                        "key": "ref13",
                        "doi": "10.21595/jve.2016.17394",
                        "unstructured": "V. Khalkar and S. Ramachandran, “Paradigm for Natural Frequency of an Un-Cracked Cantilever Beam and its Application to Cracked Beam”, ARPN Journal of Engineering and Applied Sciences, 2017, vol.12, pp.1714-1729"
                    },
                    {
                        "key": "ref14",
                        "unstructured": "P. Kumar, S.Bhaduri, and A. Kumar, “Vibration Analysis of Cantilever Beam: An Experimental Study”,International Journal for Research in Applied Science & Engineering Technology (IJRASET),2016, vol.4, pp.361-369"
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                        "key": "ref15",
                        "unstructured": "Pragnesh K. Chaudhari,DipalPatel,Vipul Patel, “Theoretical and Software Based Comparison of Cantilever beam: Modal Analysis”,International Journal of Innovative Research in Advanced Engineering (IJIRAE),2014, vol.1, pp.75-79"
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                        "key": "ref16",
                        "unstructured": "Puneet Sharma, AshishGupta, Anuj Kumar Jain, VikasRastogi, “Dynamic Modelling and Validation of Continuous Beam with Free-Free Boundary Conditions”,International Advanced Research Journal in Science, Engineering and Technology, 2017, vol.4, pp.47-53"
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                        "unstructured": "S. P. Chaphalkar, Subhash. N. Khetre, and Arun M. Meshram, “Modal analysis of cantilever beam Structure Using Finite Element analysis and Experimental Analysis”, American Journal of Engineering Research (AJER), 2015, vol.4, pp.178-185"
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                        "unstructured": "Aiko Furukawa and JunjiKiyono, “Identification of structural damage based on vibration responses”,13th World Conference on Earthquake Engineering Canada, 2004, paper 134"
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                        "unstructured": "Chandradeep Kumar, Anjani Kumar Singh, Nitesh Kumar, andAjitKumar,“Model Analysis and Harmonic Analysis of Cantilever Beam by ANSYS”,Global Journal for Research Analysis, 2014, vol.3, pp.51-55"
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                        "key": "ref23",
                        "doi": "10.1016/j.proeng.2013.01.100",
                        "unstructured": "Irshad A Khan and Dayal R parhi, “finite element analysis of double cracked beam and its experimental validation”, Procedia Engineering, 2013, vol.51, pp.703-708"
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                        "doi": "10.1016/s0141-0296(96)00149-6",
                        "unstructured": "O. S. Salawu, “Detectionof structuraldamage through changes: a review”, Engineering Structures, 1997,vol.19, pp.718-723"
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                        "unstructured": "Ashish R. Sonawane and Poonam S. Talmale, “Modal Analysis of Single Rectangular Cantilever Plate by Mathematically, FEA and Experimental”,International Research Journal of Engineering and Technology (IRJET), 2017, vol.4, pp.264-269"
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                        "unstructured": "PushkarVinayakFegade, Jayesh Ashok Mahajan, and GirishPrakashBhole “Study on Vibration Analysis of an Un-Crack and Cracked Cantilever Beam”, International Journal of Emerging Technologies in Computational and Applied Sciences (IJETCAS), 2014, vol.10, pp.340-343"
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